Evolution and Development Trend of Technologies of Extracting Potassium from Seawater

The technological principle and study evolution of methods extracting potassium from seawater, which belong to 4 kinds of technological routes including chemical precipitation, solvent-extraction, membrane separation and ionic exchange,were recited.The advantages, disadvantages and development prospects for each method were discussed. The technology process, technical and economic parameters, technical characteristics and status quo of the technology of extracting potassium from seawater by natural zeolite, which was developed by Hebei University of Technology,were amplified; the development trends of technologies of extracting potassium from seawater were forecasted.